8985518640 has 720 divisors, whose sum is σ = 38007091200. Its totient is φ = 1861263360.

The previous prime is 8985518639. The next prime is 8985518651. The reversal of 8985518640 is 468155898.

It is a happy number.

8985518640 is a `hidden beast` number, since 8 + 9 + 8 + 551 + 86 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 45153261 + ... + 45153459.

Almost surely, 2^8985518640 is an apocalyptic number.

8985518640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8985518640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19003545600).

8985518640 is an abundant number, since it is smaller than the sum of its proper divisors (29021572560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8985518640 is a wasteful number, since it uses less digits than its factorization.

8985518640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 54.

The square root of 8985518640 is about 94791.9756097530. The cubic root of 8985518640 is about 2078.9675781185.

The spelling of 8985518640 in words is "eight billion, nine hundred eighty-five million, five hundred eighteen thousand, six hundred forty".